CVE-2025-52473

MEDIUM

5.9

Description

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. Multiple secret-dependent branches have been identified in the reference implementation of the HQC key encapsulation mechanism when it is compiled with Clang for optimization levels above -O0 (-O1, -O2, etc). A proof-of-concept local attack exploits this secret-dependent information to recover the entire secret key. This vulnerability is fixed in 0.14.0.

CVE Details

CVSS v3.1 Score5.9

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published7/10/2025

Last Modified8/22/2025

Sourcenvd

Honeypot Sightings0

Affected Products

openquantumsafe:liboqs

Weaknesses (CWE)

CWE-200

References

https://github.com/open-quantum-safe/liboqs/commit/4215362acbf69b88fe1777c4c052f154e29f9897(security-advisories@github.com)

https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-qq3m-rq9v-jfgm(security-advisories@github.com)

IOC Correlations

No correlations recorded

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